Patent US5313077A successfully refreshed from Google Patents.
Patent US2960391A successfully refreshed from Google Patents.
US2960391A
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Regeneration of spent pickle liquor
Assignee: Singmaster & Breyer Inc
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Filing: 1958-10-29
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Granted: 1960-11-15
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Expires: 1978-10-29
Abstract
No abstract record available.
Inventors
- 👤 Sweet E Roy
- 👤 Jr Charles A Wolbach
- 👤 Sugino Kameo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:22
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/14; C23; C23G; C23G1/00; C23G1/36; Y; Y10; Y10S; Y10S423/00; Y10S423/01; Y10S423/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE METHOD OF TREATING SPENT PICKIE LIQUOR COMPRISING AN AWUEOUS SOLUTION OF FERROUS SULFATE AND SULFURIC ACID TO CONCENTRATED THE SULFURIC ACID AND SEPARATE FERROUS SULFATE THEREFROM AND THEREBY REGENERATE THE LIQUOR FOR USE IN PICKLING, WHICH INCLUDES EVAPORATING WATER FROM THE SPENT PICKLE LIQUOR TO A CONCENTRATION OF FERROUS SULFATE SLIGHTLY LESS THAN THE CONCENTRATION OF WHICH FERROUS SULFATE WOULD BE PRECIPITATED FROM THE LIQUOR AND THUS PREVENT PRECIPITATION OF ANY FERROUS SULFATE AND FORM A CONCENTRATED LIQUOR, ADDING SULFURIC ACID TO SAID CONCENTRATED LIQUOR AND THEREAFTER EVAPORATING WATER FROM THE CONCENTRATED LIQUOR CAUSING FERROUS SULFATE TO PRECIPITATE THEREFROM.
Claim 2
Independent Claim
100 words
THE METHOD OF TREATING SPENT PICKIE LIQUOR COMPRISING AN AWUEOUS SOLUTION OF FERROUS SULFATE AND SULFURIC ACID TO CONCENTRATED THE SULFURIC ACID AND SEPARATE FERROUS SULFATE THEREFROM AND THEREBY REGENERATE THE LIQUOR FOR USE IN PICKLING, WHICH INCLUDES EVAPORATING WATER FROM THE SPENT PICKLE LIQUOR TO A CONCENTRATION OF FERROUS SULFATE SLIGHTLY LESS THAN THE CONCENTRATION OF WHICH FERROUS SULFATE WOULD BE PRECIPITATED FROM THE LIQUOR AND THUS PREVENT PRECIPITATION OF ANY FERROUS SULFATE AND FORM A CONCENTRATED LIQUOR, ADDING SULFURIC ACID TO SAID CONCENTRATED LIQUOR AND THEREAFTER EVAPORATING WATER FROM THE CONCENTRATED LIQUOR CAUSING FERROUS SULFATE TO PRECIPITATE THEREFROM.
References Cited (Backward Citations)
US2668130A
Cited
US2721562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |